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一、概况葛洲坝水利枢纽的通航设施,是采用两线三闸,即右侧大江航线上设1号船闸,左侧三江航线上设2号、3号船闸。2号船闸有效尺寸为280×34米,槛上水深5米,可通行万吨级顶推船队。3号船闸有效尺寸翔20×18米,槛上水深3.5米,主要通行汉渝线东方红客轮及地方船队和小船。两座船闸均为单级船闸,最大设计水头为27米,中间布置有六孔冲砂闸。3号船闸与坝轴线正交,2号船闸与坝轴线斜交,交角为81.5°(见图1)。2、3号船闸输水系统,按以下主要技术指标设计:
I. General Gezhouba Hydro-junction navigation facilities, is the use of two two three gates, that is, on the right of the river route 1 ship lock on the left Sanjiang route No. 2, No. 3 ship lock. The effective size of No.2 ship lock is 280 × 34 meters, the water depth is 5 meters on the threshold, and the 10,000-ton pushing ship can pass. The effective size of No.3 ship lock is 20 × 18 meters and the water depth is 3.5 meters on the threshold. The main traffic line is the Dongfanghong passenger line on the Han-Yu line and local fleets and boats. The two locks are single-stage ship lock, the maximum design head of 27 meters, the middle layout of a six-hole red sand brake. No.3 lock is orthogonal to the dam axis. No.2 lock is oblique to the dam axis with an angle of 81.5 ° (see Figure 1). 2,3 shiplock water delivery system, according to the following key technical indicators: